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HEENAN & FROUDE LTD

Overview
  • Total Patents
    389
About

HEENAN & FROUDE LTD has a total of 389 patent applications. Its first patent ever was published in 1906. It filed its patents most often in United Kingdom, France and Germany. Its main competitors in its focus markets electrical machinery and energy, measurement and mechanical elements are ROBOTEC INC, CLEVELAND MOTION CONTROLS INC and HOLMES SOLUTIONS LTD.

Patent filings in countries

World map showing HEENAN & FROUDE LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 146
#2 France 107
#3 Germany 39
#4 United States 32
#5 Spain 29
#6 Switzerland 21
#7 Denmark 9
#8 Austria 4
#9 Ireland 1
#10 Netherlands 1

Patent filings per year

Chart showing HEENAN & FROUDE LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Henry Walker George 18
#2 Froude Limited Heenan 18
#3 Evans Godfrey Arthur 9
#4 Bathurst William Nevile 8
#5 Jarvis Ivor Maurice 6
#6 Jaeschke Ralph Louis 6
#7 Maurice Jarvis Ivor 4
#8 Walker George Henry 3
#9 Garden Joseph 3
#10 Arthur Evans Godfrey 3

Latest patents

Publication Filing date Title
DE1802143A1 Control system for a hydrokinetic brake
GB1202751A Hydrokinetic dynamometer control systems
GB1188861A Improvements in or relating to Grate Assemblies for Refuse Incinerators.
GB1188862A Improvements in or relating to Grate Assemblies for Refuse Incinerators.
GB1106631A Sound suppressor assemblies for electromagnetic induction apparatus
GB1107399A Vehicle testing apparatus
ES312424A1 Hydraulic dynamometer of hydrocine type. (Machine-translation by Google Translate, not legally binding)
ES312423A1 Hydraulic dynamometer. (Machine-translation by Google Translate, not legally binding)
DE1281713B Hydraulic dynamometer or hydraulic pump
US3364736A Hydraulic dynamometers of the hydrokinetic type
GB1082877A Improvements in or relating to controlled velocity drives
GB1074592A Improvements in or relating to systems employing hydraulic dynamometers of the hydrokinetic type
GB1088103A Improvements in or relating to hydraulic dynamometers and like rotary hydraulic apparatus
DE1247455B Fluid-cooled eddy current coupling
DE1281540B Bearing arrangement for dynamo-electric machines
DE1274728B Electrical control arrangement for an eddy current clutch switched on between a drive motor changing speed and a shaft to be kept constant load speed
GB925439A Improvement in electric controls for electro-magnetic couplings
DE1190219B Hydraulic brake dynamometer
DE1145263B Water-cooled eddy current coupling
DE1196283B Air cooling for a drive unit with motor and eddy current device